Date: Sat, 19 Nov 2011 11:51:19 -0200 From: "Nenhum_de_Nos" <matheus@eternamente.info> To: freebsd-stable@freebsd.org Subject: Re: mount GPT from Windows 7 in FreeBSD 9 Message-ID: <5f508e72e9cfcf7ebfe8ec53a68851e9.squirrel@eternamente.info> In-Reply-To: <20111119095808.GA87444@icarus.home.lan> References: <678178215ed5d725a42eb2b4ae25102c.squirrel@eternamente.info> <20111119095808.GA87444@icarus.home.lan>
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On Sat, November 19, 2011 07:58, Jeremy Chadwick wrote:
> On Fri, Nov 18, 2011 at 10:55:10PM -0200, Nenhum_de_Nos wrote:
>> hail,
>>
>> I have two disks, and the one holding Windows appears just as ada1 or ad8, despite fdisk shows
>> all
>> partitions fine.
>>
>> I tried to kldload geom_gpt_something, but it says it was already loaded. I couldn't mount using
>> mount_ntfs, so I would use fuse to have ability to write on it :)
>>
>> is there a way to solve this ?
>> two disks. One just FreeBSD, the other just Windows.
Jeremy, thanks and let's to the answers.
> First: to my knowledge, fdisk does not support GPT, so I'm not sure what
> you mean when you say "it shows all partitions fine". You should
> probably use gpart(8) instead, e.g. "gpart show" and/or "gpart list".
> See the man page for usage. It will work with all types, and tell you
> what scheme is used (MBR, GPT, etc.).
its all here :)
macgyver# fdisk ada1
******* Working on device /dev/ada1 *******
parameters extracted from in-core disklabel are:
cylinders=484521 heads=16 sectors/track=63 (1008 blks/cyl)
Figures below won't work with BIOS for partitions not in cyl 1
parameters to be used for BIOS calculations are:
cylinders=484521 heads=16 sectors/track=63 (1008 blks/cyl)
Media sector size is 512
Warning: BIOS sector numbering starts with sector 1
Information from DOS bootblock is:
The data for partition 1 is:
sysid 7 (0x07),(NTFS, OS/2 HPFS, QNX-2 (16 bit) or Advanced UNIX)
start 2048, size 204800 (100 Meg), flag 80 (active)
beg: cyl 0/ head 107/ sector 16;
end: cyl 48/ head 134/ sector 14
The data for partition 2 is:
sysid 7 (0x07),(NTFS, OS/2 HPFS, QNX-2 (16 bit) or Advanced UNIX)
start 206848, size 103165952 (50374 Meg), flag 0
beg: cyl 48/ head 134/ sector 15;
end: cyl 1023/ head 223/ sector 19
The data for partition 3 is:
sysid 7 (0x07),(NTFS, OS/2 HPFS, QNX-2 (16 bit) or Advanced UNIX)
start 103372800, size 385019904 (187998 Meg), flag 0
beg: cyl 1023/ head 239/ sector 63;
end: cyl 1023/ head 239/ sector 63
The data for partition 4 is:
<UNUSED>
macgyver# gpart show ada1
=> 34 488397101 ada1 GPT (232G)
34 488397101 - free - (232G)
macgyver# gpart list ada1
Geom name: ada1
modified: false
state: OK
fwheads: 16
fwsectors: 63
last: 488397134
first: 34
entries: 128
scheme: GPT
Consumers:
1. Name: ada1
Mediasize: 250059350016 (232G)
Sectorsize: 512
Mode: r0w0e0
macgyver# dmesg | grep ada1
ada1 at ahcich2 bus 0 scbus2 target 0 lun 0
ada1: <ST3250820AS 3.AAE> ATA-7 SATA 1.x device
ada1: 150.000MB/s transfers (SATA 1.x, UDMA6, PIO 8192bytes)
ada1: Command Queueing enabled
ada1: 238475MB (488397168 512 byte sectors: 16H 63S/T 16383C)
ada1: Previously was known as ad8
macgyver#
> Next item: what do you mean it appears as "ada1 **or** ad8"? ada1
> indicates you're using ahci.ko (not ataahci.ko) which supports AHCI via
> CAM(4), while the latter indicates you're using ata(4) (even if AHCI is
> in use; that would be ataahci.ko). Why/how would this change unless you
> are messing with cables or enabling/disabling drivers?
As now I'm on FreeBSD in this machine, there is:
macgyver# ls /dev/ada1*
/dev/ada1
but the FreeBSD disk:
macgyver# ls /dev/ada0*
/dev/ada0 /dev/ada0s1 /dev/ada0s1a /dev/ada0s1b /dev/ada0s2 /dev/ada0s2a
/dev/ada0s3 /dev/ada0s4 /dev/ada0s4a /dev/ada0s4b
and I still have old ad4 and ad8:
macgyver# ls /dev/ad4* /dev/ad8*
/dev/ad4 /dev/ad4s1 /dev/ad4s1a /dev/ad4s1b /dev/ad4s2 /dev/ad4s2a
/dev/ad4s3 /dev/ad4s4 /dev/ad4s4a /dev/ad4s4b /dev/ad8
and my point here is there even though fdisk shows some windows partitions, I can't even address
them as I just see ada1/ad8. no ada1s1 or anything alike.
> Next item: I think you're referring to the geom_part_gpt.ko module,
> but you don't need to do that. GEOM and related kernel bits will load
> it automatically, which is why it told you it's already loaded. You can
> use "kldstat" to verify. Otherwise it's statically-included in your
> kernel.
I noticed that. I got to put it on loader.conf: for the record, no good and won't be able to boot
the box (usb live solved). I thought I needed to load the module to see the gpt.
> Next item: this sounds like the crux of your issue. As I understand it,
> NTFS support via kernel on FreeBSD is in an extremely bad state on
> numerous levels. You can find complaints about lack-of or badly-done
> UTF-8 filename/path support, lack of full write support, and the more
> important/major Non-MPSAFE filesystem declaration here:
> http://wiki.freebsd.org/NONMPSAFE_DEORBIT_VFS
unfortunately I didn't got to this point as I never got to see the partitions :( but I plan to use
ntfs from fuse.
> It looks like attilio@freebsd.org has taken ownership of the NTFS driver
> in the kernel at this point. You may want to ask him if there are any
> patches you could try.
>
> However, as I understand it, the fuse-based NTFS is more reliable and
> has much higher compatibility. The trade-offs are added complexity
> getting it all to work, and slower speed.
>
> Final item: you sent this mail twice, once to stable@freebsd.org, once to
> freebsd-stable@freebsd.org. The mail ID headers appear to indicate
> they were separate/unique and the mail content themselves slightly
> differs (extra newlines, etc.). No need for this; they are the same
> list.
>
> 3909 11/18 22:55 Nenhum_de_Nos (0.8K) mount GPT from Windows 7 in FreeBSD 9
> Message-ID: <678178215ed5d725a42eb2b4ae25102c.squirrel@eternamente.info>
> 3910 11/19 03:20 Nenhum_de_Nos (1.1K) mount GPT from Windows 7 in FreeBSD 9
> Message-ID: <1c312a399e23d546f05f5e8396763323.squirrel@eternamente.info>
and this, sorry for the double post. I sent the message to freebsd-stable@ and waited a couple of
hours. Nothing showed on the list. I thought was a problem with it, then sent again:
stable@freebsd.org 03:20 1.4 k mount GPT from Windows 7 in FreeBSD 9
freebsd-stable@freebsd.org Fri, 22:55 1.1 k mount GPT from Windows 7 in FreeBSD 9
this is from squirrelmail. first message 22:55 from Friday in my time zone, the second was 3:20
from Saturday. then I tried to subscribe again to the list (I thought I was no more on it), and
got the message I was there ...
again, sorry but I just thought I was not there anymore. Was there any issues with the list
yesterday ? usually it is not that slow (I think).
thanks,
matheus
--
Pregando o ódio a Oi desde 2007
We will call you cygnus,
The God of balance you shall be
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
http://en.wikipedia.org/wiki/Posting_style
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